METHOD FOR EXPANDING TUBE END PORTIONS Russian patent published in 2000 - IPC

Abstract RU 2158646 C2

FIELD: plastic metal working, possibly in aircraft construction, ship building and relating industry branches. SUBSTANCE: method comprises steps of pushing tubular blank onto punch; in order to provide hydrostatic pressure in material of tubular blank placing onto it outer tubular blank having larger thickness and made of more ductile metal than inner blank. EFFECT: increased shaping degree at expanding tube end portions. 1 dwg

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RU 2 158 646 C2

Authors

Merkulov V.I.

Mar'In B.N.

Odinokov V.I.

Shport V.I.

Makarov K.A.

Ivanov Ju.L.

Dates

2000-11-10—Published

1998-08-11—Filed